High-Temperature Low-Cycle Fatigue Behaviour of MAR-M247nCoated with Newly Developed Thermal and EnvironmentalnBarrier Coating

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F18%3A00499226" target="_blank" >RIV/68081723:_____/18:00499226 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1155/2018/9014975" target="_blank" >http://dx.doi.org/10.1155/2018/9014975</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1155/2018/9014975" target="_blank" >10.1155/2018/9014975</a>

Result language

angličtina

Original language name

High-Temperature Low-Cycle Fatigue Behaviour of MAR-M247nCoated with Newly Developed Thermal and EnvironmentalnBarrier Coating

Original language description

This study investigates the strain-controlled low-cycle fatigue (LCF) behaviour of an untreated and surface-treated MAR-M247 superalloy in a symmetrical push-pull cycle with a constant strain rate at 900 degrees C in laboratory air. A newly developed experimental thermal and environmental barrier coating (TEBC) system, consisting of a 170m thick CoNiCrAlY bond coat (BC) and a bilayer ceramic top coat (TC), with an interlayer and an upper layer, was deposited using air plasma spray techniques. The ceramic interlayer with an average thickness of 77m was formed from agglomerated and sintered yttria-stabilized zirconia. An experimental mixture of mullite (Al6Si2O13) and hexacelsian (BaAl2Si2O8) at a ratio of 70/30vol.% was sprayed as the upper layer. The average thickness of the TC was 244m. The specimen sections were investigated using a TESCAN Lyra3 XMU scanning electron microscope (SEM) to characterise the microstructure of both the TEBC and the substrate material. The fatigue damage mechanisms in the TEBC-coated superalloy were studied. The fatigue life curves in the representation of the total strain amplitude versus the number of cycles to failure of the TEBC-coated and uncoated superalloy were assessed. TEBC was found to have a slight, positive effect on the fatigue life of MAR-M247.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20306 - Audio engineering, reliability analysis

Project

<a href="/en/project/LM2015069" target="_blank" >LM2015069: Infrastructure for Study and Application of Advanced Materials</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Advances in Materials Science and Engineering

ISSN

1687-8434

e-ISSN

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Volume of the periodical

Vol.2018

Issue of the periodical within the volume

DEC

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

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UT code for WoS article

000455610800001

EID of the result in the Scopus database

2-s2.0-85059967297